Robert



Patented lan. I7, |899. R. H. BURNS."

SMOKE PREVENTING APPARATUS.

(Application lsd Aug. 16, 1898.)

ma Model.)

Wxwissis.

UNITED STATES ROBERT II. BURNS, OF NEW YORK, N. Y.

SMOKE-PREVENTING APPARATUS.

srscmcsnon forming pm et retten ment mi 617,805, dated January 17, ieee.

animen ma mgm 1a, ma.

To all whom it may concern:

Beit known that I, Romani' H.'BUsss, a citizen of the United States, residing in New York city, county of Kings, and State ofNew York, have invented certain new and useful Improvements in SmokelPreveuting Appare tus, of which the following is a specification, referen being had to the accompanying drawings. A

My invention relates toa special means for introducing a new air or combustion eecting and assisting medium into the chimney ilue or lines of a furnace or combustion-chamber, whereby an antagonistic impingement and a resultant-heating and mingling oi' the admitted medium with the furuace-gasesiseifected, causing an increased and more eilicient combination of the fuel and its gases.

My improvements consist in the insertion within a chimney-due of a hollow revolving chamber riding upon trunnions made tubular on one or both sides for the admiion cf the combustion eecting or assisting medium to said revolvingchamber. Thisrevolvingcham ber is supplied with holes or perforations to se= cure a scattered exit or dischargedf the contained medium either by means of applied force, expansionpressnre, or ordinary circulation. The revolving chamber is preferably located in as close proximity to the furnace or combustion-chamber as possible, so that the combustion eecting or assisting medium may the more readily reach the gases tobe consumed and secure their complete combus., tion as near the pintpf best use as possible.

For an economical and complete combustion of fuel and its in a heating, evaporsting, and like apparatus it is essential and n that as much heat as posible shall pass from the fire and combustion to.the heating,`evaporating, or work to be done. It is likewise essential and necessary that a certain quantity of the manufactured heat shall pass out through the iiue and chimney for draft purposes. If, now, asulcient and iinal combustion` of any spare or unburned gases is provided for and secured within the ilue and close to the other combustion throu h a new and independent supply of the com ustlon etecting and l 1 medium, a maxlxiun emcieney will have" n p rovld for and attained, since s greater quantityof heat steun.. sss.1ss.` mmm has been passed to the heating or evaporating plant and the due-combustion has furnished the heat for chimney circulation and dis charge.

Referring to theaccompanying drawings, Figures 1 and 2 represent transverse and longitudinal sections of a chimney-ilus embodying my improvements,. the due being repre sented as o n. Figs. 3 and 4 represent the same, the ue being represented as closed. Figs. 5 and 6 represent a square ilue supplied .with my improvements, the full lines showing the iiue open, the dotted lines showing it closed.

Similar letters of reference designate like parts or portions in all the iigures.

Letter A designates the tlne in section.

B designates a hollow revolving chamber or compartment adapted to contain and discharge the air or combustion eEecting or assisting medium.

C designates the trunnions upon which chamber B revolves or swings and through which the air or combustion effecting or 'as` sisting medium is admitted or forced into chamber B, within which when in service it becomes completely or-partially heated, accordin to the speed at which it passes through. tter D designates exit-holas or perforatious at the larger end, and D' designa holes or perforations. at the smaller end, of chamber B, as illustrated. Through these holes or perforations the combustion eeeting or assisting medium is scattered or passed to mingle with the gases from the fuel for increased combustion.

C' designates a cap or like means for closing the tubular trunnions to prevent or stay the admission of the combustion eecting or assisting medium to chamber B. When outside air is admitted, it may be closed by placf lug caps C' over the ends of the trunnions. When pressure or the combustion effecting orassistin 'medium is made use of, s valve of any wel -knewn type will be necessary.

C designates an o rating lever or handle tolgpen or close the ille.l a

esignateeavent o eci-pu i ge or ueventilation when the furnace is not in use or when s slow fire is desired or when the illes are banked.

Letter p indicates the angle of movementto swing the chamber B to'a f ull opening or closing of the flue.

P'designates a flue-pocket into which chamber B swings to open the flue. Should the iiue be of ample size, this pocket P need not be provided, the -chamber B resting and revolving within the immediate and direct line of the flue.

In the operation of the device the combustion effecting orassist-ing medium is admitted or forced into chamber B through trunnions C and passes out through holes D at large end or holes D' at the small end, or through both, according to necessity or desire. When. the combustion effecting or assisting medium passes out through the holes or perforations D, it comes into immediate and'direct and antagonistic contact with and impinges upon the fire or furnace gases, resulting in animmediate and more etiicient combustion and result. When the medium passes out through the perforations D', it mingles with gases of combustion more slowly and moving in the same direction assists them mechanically to a more speedy exit. When the draft of chim ney is good, there will be no necessity for holes or perforations D' and they should be omitted. These holes or perforations D or D may of course be located at any portion of chamber B. They, however, act more eiciently at the ends, as shown.

The tine side of chamber B is preferably made concave, as shown, when used in connection with round lines. Thechamber B is made in form and shape best suitable to thatof the tine in whichit is mbe used. It is not essential that it shall be large at one end and small at the other, but only that the chamber shall be sufficiently large to carry the required combustion effecting or assistin medium.

When the ue is not in usefor eatingpurposes, air may be permitted to pass into cham ber B and out through the holes or rforations and thencethrough theventilating-passage E for flue and chimney ventilation.

When a minimum combustion in slow-tire practice is `desired,^chamher B is revolved to fill the fine, its periphery being iu closed contact with the inner surface of the flue, the combustion assisting medium passing out through holes or perforation's .D at the furnace end of-.hamber B in a dlr'ection'toward the furnaee,-meeting, impinging upon, and

emacs mingling with its unconsumed or combusti'on, thereby effecting a resultant. com- 55 bustion of the same. n

The comb'ustion effecting or assisting ma dium may be, as preferred', atmospheric air,

.assisting gases, atomized petroleum, or the like.

A damper of ordinary or preferred make may be inserted within the tine or chimney beyond and outside of thecombustion-eecting chamber B for Qrdiuary and usual purby Letters Patent, is-

1. In combination with a furnace or chimney iiue, an iuclosed chamber, the periphery of which is made to conform to the inner sur- 7o face of said ue and make closed contact therewith, tubular .inlet trunnions upon which said chamber revolves, and exit holes or perforations, as and for the purposes set forth.

2. In combination with a chimue -iiue, an inclosed revolving chamber adapted n shape to permit of a complete opening and closing of the iiue, tubular trunnions upon which it revolves, exit holes or perforatious in the walls of said chamber, and a Ventilating-pas sage through said chamber, substantially as and for the purposes set forth.

3. In combination with a furnace or chimney flue, an inclosed chamber, the periphery of wlich is made to conform to and make closed contact with the inner surface of said iine, tubular inlet-tru unions upon which said chamber revolves, and exit holes or perfora tions located at the furnace end of said chamber, as and for the purposes set forth.

4. In combination with a furnace or chim ney flue, an inclosed chamberft-he periphery of which is made to conform to and make closed contact with the inner surface ofsaid flue, tubular iulet-trunnions upon which said chamber revolves, exit holes or perforation in the'walls of said chamber, a vent or passage'through said chamber, and a pocket into which said chambermay revolve as and for the purposes set forth.

ROBERT II. BURNS.

Witnesses:

HENRY J. WILBE, Wx'. II. Winamax.

ioses. What I claim as new, and desi :e t0 secure l 

